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Phytoplasmas are a worldwide issue in plant health. A range of serious diseases are caused by these bacteria in major crops around the globe. Knowledge of the importance of phytoplasmas as plant disease agents has advanced rapidly over the last decade with an increased interest in the impact of these pathogens on important field and horticultural crops as well as ornamental plants. This comprehensive volume brings together current research on phytoplasmas, covering their biology, taxonomy and genomics as well as their interactions with plant hosts and transmission by vectors.

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Inter and intra-accession variation indicated the presence of local wealth for lentil that is yet needed to collect, therefore further exploration mission is suggested to strengthen gene pool. Except Punjab province, all the other areas are required to explore before extinct of this local germplasm.The RAPD markers exhibited significant association with three parameters (SDS-PAGE, isozymes and qualitative trait). All the five parameters facilitated to resolve issues related to genetic diversity in lentil, anyhow total seed proteins and isozyme (six in present case) gave low level of genetic diversity that suggested to incorporate more isozymes for investigation due to its precise fingerprinting and wider use. The RAPD could be enhanced including more primers including more germplasm, as 50% primers in general were polymorphic in nature.